Reinforcement for concrete wall form connectors



June 3, 1969 J E. TR|MMER 3,447,771

REINFORCEMENT FOR CONCRETE WALL FORM CONNECTORS Filed Aug. 14, 1967 30xl /4 1 F15. i.

32 rle 22 I NV EN TOR dames 5 7kb/mer TTORNEYS United States Patent O3,447,771 REINFORCEMENT FOR CONCRETE WALL FORM CONNECTORS `lames E.Trimmer, 7713 E. 113th St., Kansas City, M0. 64134 Filed Aug. 14, 1967,Ser. No. 660,464 Int. Cl. E04g 17/04, l] 08 U.S. Cl. 249-192 1 ClaimABSTRACT OF THE DISCLOSURE The success and acceptance of theconventional pin and wedge type of connector for concrete wall forms isevidenced by its widespread use, but there exists a dilllcult problemthat has not heretofore been solved relating to damage to the form withresultant replacement costs. To the end that the forms may be rapidlydisassembled, it is the current practice to remove the connector byhammer blows to the wedge and to the pin with resultant damage to theform at the pin-receiving hole of the flanges.

It is the most important object of the present invention, therefore, toprovide a protection for the forms through use of a hard metal linerwithin the holes capable of withstanding the abuse to which the form issubjected during use, especially during removal of the connectors.Another important object of the instant invention is to solve theaforementioned problem through use of the hard metal liner by theprovision of an inexpensive plate which serves to hold the liner inplace through an interconnection between the plate and the liner as wellas the plate and the corresponding flange of the panel.

In the drawing:

FIGURE 1 is a perspective view illustrating a portion of a concrete wallform illustrating the reinforcing connector made pursuant to my presentinvention;

FIG. 2 is a fragmentary perspective view of the wall form partiallyexploded and broken away to reveal details of construction of theconnector;

FIG. 3 is a view similar to FIG. 2 illustrating the connector in place;

FIG. 4 is an enlarged, fragmentary, cross-sectional view taken alongline 4 4 of FIG. 3; and

FIG. 5 is a vertical cross-sectional View through one of the flanges aswell as through the reinforcing liner and its mounting plate.

Wall form includes a plurality of side-by-side panels 12 provided withlaterally extending flanges 14 having aligned openings 16 which normallyreceive connecting pins 18. Pins 18 have heads 20 on one end thereoftogether with slots 22 for receiving locking wedges 24.

3,447,771 Patented June 3, 1969 Disassembly of the panels 12 is normallyaccomplished by hammer blows to the beveled end 26 of the pin 18 whichloosens the wedge 24 and as a result of such hammering action, the holes16 become damaged, .oftentimes to the point where the entire panel 12must be replaced.

In accordance -with the instant invention, therefore, I provide atubular liner 28 for each hole 16 respectively made from any suitablehard metal such as steel capable of withstanding the aforementionedabuse and having a bore therethrough of sulllcient diameter to receivethe pin 18, as best illustrated in FIG. 4.

The liner 28 of my improvement is held in place within the correspondingopening 16 by a plate 30 held flatly against the corresponding flange 14by a pair of rivets 32. It is to be noted that the plates 30 areperforated to receive the liners 28, the latter being rigidly secured tothe plate 30 by a weld 34 surrounding the liner 28.

With this construction the plates 30 may be stamped from any suitableinexpensive sheet material, and the entire protector 28-30 for theopenings 16 may be quickly and inexpensively manufactured without needfor machine or other costly operation. Such protector is characterizedby long wear and by the ease in which it may be replaced withoutappreciable cost from time to time as may become necessary, therebyadding considerable life to the panel 12.

Having thus described the invention, what is claimed as new and ydesiredto be secured by Letters Patent is:

1. In a concrete wall form including a plurality of panels provided withflanges having aligned openings, a connector comprising:

a hard metal, tubular reinforcing liner in each opening respectively;

a pin passing through the liners,

said pin having a head on one end thereof and a slot adjacent itsopposite end;

a wedge in the slot for clamping the flanges between the head and thewedge;

structure attaching the liners to the flanges,

said structure including an elongated, rectangular plate mounted on eachliner respectively and secured to the corresponding flange,

each plate having a hole receiving its liner, there being a Weld aroundthe hole attaching the liner to the plate; and

rivets securing the plates to the flanges,

each of said liners having a length equal to the thickness of acorresponding flange,

said liners being in abutting relationship.

References Cited UNITED STATES PATENTS 3,077,653 2/1963 Ward 25-131 J.SPENCER OVERHOLSER, Primary Examiner. D. W. JONES, Assistant Examiner.

U.S. Cl. X.R. 249--219

